CN218913117U

CN218913117U - Miniature air pump

Info

Publication number: CN218913117U
Application number: CN202222826297.XU
Authority: CN
Inventors: 胡永强; 吴鑫
Original assignee: Shenzhen Renhe Intelligent Industry Co ltd
Current assignee: Shenzhen Renhe Intelligent Industry Co ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-04-25
Anticipated expiration: 2032-10-26

Abstract

The utility model discloses a miniature air pump, comprising: the driving assembly comprises a driving motor, an eccentric wheel and a linkage rod, wherein the eccentric wheel is fixed at the movable end of the driving motor, one end of the linkage rod is sleeved with the eccentric wheel, and the linkage rod reciprocates under the action of the driving motor; the compression module comprises an air blowing bag with an opening on one surface, a sealing cover matched with the opening of the air blowing bag and an air outlet groove, and the opening of the air blowing bag is positioned in the air outlet groove; the miniature air pump provided by the utility model has the advantages that the air bag continuously enters from the air inlet and is exhausted from the air outlet under the continuous reciprocating motion action of the linkage rod, the structure is simple, compact and convenient to assemble, and the noise caused by the one-way valve is reduced.

Description

Miniature air pump

Technical Field

The utility model relates to the field of gas delivery, in particular to a miniature air pump.

Background

The miniature air pump has wide application fields, such as portable instruments, mobile and handheld devices, etc.; the miniature air pump is a gas conveying device which is small in size, takes a gaseous working medium, is mainly used for multiple purposes such as gas sampling, gas circulation, vacuum adsorption, vacuum pressure maintaining, air extraction, inflation and pressurization, and the working principle of the miniature air pump is that a piston unit is driven to do vertical linear motion through the rotary motion of a motor, so that a cylinder part in the piston unit is repeatedly compressed and expanded to execute the inflation function of the miniature air pump.

Through retrieving, the patent document of the bulletin number CN209278079U, a miniature air pump is disclosed, which comprises a pump body, be equipped with one-level compression chamber in the pump body, there is the upper cover upper end of the pump body through the screw connection, be equipped with the second grade compression chamber in the upper cover, one side of the one-level compression chamber intercommunication the second grade compression chamber, one side of the pump body is equipped with the motor, the motor passes through the support to be fixed, the output shaft of motor runs through the lateral wall of the pump body and extends to in the pump body, be equipped with the eccentric block on the output shaft, the upper end of eccentric block is equipped with the piston rod, the upper end of piston rod is connected with the piston, the piston is located in the one-level compression chamber, one side of the pump body is equipped with electromagnetic air inlet unit. The electromagnetic air inlet device is arranged, so that the tightness during air inlet is ensured, and the air inlet efficiency and the air compression effect are greatly improved.

It is known from this that the above-mentioned scheme mainly utilizes the piston to make reciprocating motion in the one-level compression chamber, and then compresses gas, realizes the function of aerifing, in order to prevent that above-mentioned scheme admission line and the pipeline intercommunication of giving vent to anger are not same compression chamber, the centre adopts to set up the second admission valve, both check valve piece.

However, the piston and the one-way valve plate have fatigue life, the piston reciprocates in the compression chamber for a long time, the one-way valve plate is frequently opened and closed, the damage is easy to generate, the inflation function is further affected, and the problems of high noise exist in the piston friction and the one-way valve plate opening and closing.

The utility model aims to provide a novel miniature air pump.

Disclosure of Invention

The utility model provides a novel miniature air pump with simple and compact structure, which has the following technical scheme:

a miniature air pump comprising: the driving assembly comprises a driving motor, an eccentric wheel and a linkage rod, wherein the eccentric wheel is fixed at the movable end of the driving motor, one end of the linkage rod is sleeved with the eccentric wheel, and the linkage rod reciprocates under the action of the driving motor; the compression module comprises an air blowing bag with an opening on one surface, a sealing cover matched with the opening of the air blowing bag and an air outlet groove, and the opening of the air blowing bag is positioned in the air outlet groove; the other side of the air bag is provided with a mounting groove and an air inlet, the other end of the linkage rod is movably arranged in the mounting groove, and the air bag is correspondingly compressed or stretched under the driving of the linkage rod.

Specifically, miniature air pump still includes fixed shell and the intermediate baffle that is used for fixed driving motor, intermediate baffle forms a cavity with the fixed shell, eccentric wheel, trace, air-blowing bag all are located the cavity inside.

Specifically, the air outlet of the air outlet groove is in the horizontal direction.

Specifically, the air bag is a silica gel air bag.

The technical scheme of the utility model has the following beneficial effects:

compared with the prior art, the miniature air pump provided by the utility model has the advantages that the maximum stress of damage can not be generated, the fatigue life is longer, and noise caused by piston friction and opening and closing of the one-way valve body is avoided.

Drawings

FIG. 1 is a cross-sectional view of a miniature air pump according to the present utility model;

FIG. 2 is a diagram showing the connection structure of a micro air pump air bag and a linkage rod;

FIG. 3 is a perspective view of a miniature air pump air bag provided by the utility model;

FIG. 4 is a connecting structure diagram of a micro air pump air bag and a sealing cover provided by the utility model;

fig. 5 is a perspective view of a micro air pump according to the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, a first feature is "on" or "to a second feature unless explicitly specified and defined otherwise

"under" may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

As shown in fig. 1, the miniature air pump provided by the utility model comprises a driving assembly and a compression assembly, wherein the driving assembly comprises a driving motor 11, an eccentric wheel 12 and a linkage rod 13, the eccentric wheel 12 is fixed at the movable end of the driving motor 11, one end of the linkage rod 13 is sleeved with the eccentric wheel 12, and the linkage rod 13 reciprocates under the action of the driving motor 11; the compression module comprises a gas bag 21 with one surface opened, a sealing cover 22 matched with the opening of the gas bag 21 and a gas outlet groove 23, wherein the opening of the gas bag 21 is positioned in the gas outlet groove 23; the other surface of the air bag 21 is provided with a mounting groove 211 and an air inlet 212, the other end of the linkage rod 13 is movably arranged in the mounting groove 211, and the air bag 21 is correspondingly compressed or stretched under the driving of the linkage rod 13.

In this embodiment, on the one hand, as shown in fig. 2 and 3, the other end of the linkage rod 13 is movably installed in the installation groove 211, and the linkage rod 13 reciprocates under the action of the driving motor 11 and the eccentric wheel 12, and is far away from or near to the air inlet 212; when the linkage rod 13 is far away from the air inlet 212, the air bag 21 is driven to stretch by the linkage rod 13, air enters the air bag 21 through the air inlet 212, when the linkage rod 13 is close to the air inlet 212, the linkage rod 13 seals the air inlet 212 and continuously extrudes the air bag 21, the air bag 21 is driven to compress by the linkage rod 13, and at the moment, the air bag 21 compresses the air in the air bag; on the other hand, as shown in fig. 4, the air bag 21 has an opening on one side and a sealing cover 22 matching with the opening of the air bag 21 is arranged at the opening, when the air bag 21 is in a stretched state, the air bag 21 and the sealing cover 22 are closed, at this time, air can only enter the air bag 21 from the air inlet 212, when the air bag 21 is in a compressed state, the air pressure in the air bag 21 is increased until the opening of the air bag 21 is opened, and a gap is formed between the opening of the air bag 21 and the sealing cover 22, meanwhile, because the air inlet 212 of the air bag 21 is blocked by the linkage rod 13, compressed air can only be discharged from the gap, the opening of the air bag 21 is positioned inside the air outlet groove 23, and air discharged from the gap is guided by the air outlet groove 23 and discharged from the air outlet 231.

According to the miniature air pump provided by the utility model, the air bag 21 continuously enters the air inlet 212 and the air outlet 231 under the continuous reciprocating motion action of the linkage rod 13, so that compared with the prior art, the miniature air pump is simpler in structure, convenient to assemble and more compact, and meanwhile, the noise caused by the one-way valve is reduced.

Specifically, the miniature air pump further comprises a fixed shell 3 and a middle partition plate 4 for fixing the driving motor, the middle partition plate 4 and the fixed shell 3 form a cavity, and the eccentric wheel 12, the linkage rod 13 and the air bag 21 are all positioned in the cavity.

Specifically, the air outlet 231 of the air outlet groove 23 is in a horizontal direction.

Specifically, the air bag 21 is a silica gel air bag.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A miniature air pump comprising: the driving assembly and the compression assembly are characterized in that the driving assembly comprises a driving motor, an eccentric wheel and a linkage rod, the eccentric wheel is fixed at the movable end of the driving motor, one end of the linkage rod is sleeved with the eccentric wheel, and the linkage rod reciprocates under the action of the driving motor; the compression module comprises an air blowing bag with an opening on one surface, a sealing cover matched with the opening of the air blowing bag and an air outlet groove, and the opening of the air blowing bag is positioned in the air outlet groove; the other side of the air bag is provided with a mounting groove and an air inlet, the other end of the linkage rod is movably arranged in the mounting groove, and the air bag is correspondingly compressed or stretched under the driving of the linkage rod.

2. The miniature air pump according to claim 1, further comprising a fixing housing for fixing the driving motor and an intermediate partition plate, wherein the intermediate partition plate and the fixing housing form a cavity, and the eccentric wheel, the linkage rod and the air-blowing bag are all located in the cavity.

3. A miniature air pump according to claim 2, wherein the air outlet of the air outlet tank is oriented horizontally.

4. A miniature air pump according to claim 3, wherein the air bag is a silicone bladder.